TDA5140A

INTEGRATED CIRCUITS DATA SHEET TDA5140A Brushless DC motor drive circuit Product specification Supersedes data of March 1992 File under Integrated Circuits, IC02 April 1994 Philips Semiconductors Philips Semiconductors Product specification Brushless DC motor drive circuit FEATURES Full-wave commutation (using push/pull drivers at the output stages) without position sensors Built-in start-up circuitry Three push-pull outputs: – 0.8 A output current (typ.) – low saturation voltage – built-in current limiter Thermal protection Flyback diodes Tacho output without extra sensor Position pulse stage for phase-locked-loop control Transconductance amplifier for an external control transistor. QUICK REFERENCE DATA Measured over full voltage and temperature range. SYMBOL VP VVMOT VDO ILIM Notes 1. An unstabilized supply can be used. 2. VVMOT = VP; +AMP IN = −AMP IN = 0 V; all outputs IO = 0 mA. ORDERING INFORMATION PACKAGE EXTENDED TYPE NUMBER PINS TDA5140A TDA5140AT 18 20 PIN POSITION DIL SOL MATERIAL plastic plastic PARAMETER supply voltage input voltage to the output driver stages drop-out output voltage current limiting note 1 note 2 IO = 100 mA VVMOT = 10 V; RO = 3.9 Ω CONDITIONS 4 1.7 − 0.7 MIN. − − 0.93 0.8 TYP. GENERAL DESCRIPTION APPLICATIONS VCR Laser beam printer Fax machine Blower Automotive. TDA5140A The TDA5140A is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode. The device is sensorless (saving of 3...